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<div class="titlepage"><div><div><h4 class="title">
<a name="boost_asio.reference.experimental__coro.traits"></a><a class="link" href="traits.html" title="experimental::coro::traits">experimental::coro::traits</a>
</h4></div></div></div>
<p>
          <a class="indexterm" name="boost_asio.indexterm.experimental__coro.traits"></a> 
The
          traits of the coroutine. See <a class="link" href="../experimental__coro_traits.html" title="experimental::coro_traits"><code class="computeroutput"><span class="identifier">experimental</span><span class="special">::</span><span class="identifier">coro_traits</span></code></a> for details.
        </p>
<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">coro_traits</span><span class="special">&lt;</span> <span class="identifier">Yield</span><span class="special">,</span> <span class="identifier">Return</span><span class="special">,</span> <span class="identifier">Executor</span> <span class="special">&gt;</span> <span class="identifier">traits</span><span class="special">;</span>
</pre>
<h6>
<a name="boost_asio.reference.experimental__coro.traits.h0"></a>
          <span class="phrase"><a name="boost_asio.reference.experimental__coro.traits.types"></a></span><a class="link" href="traits.html#boost_asio.reference.experimental__coro.traits.types">Types</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/completion_handler.html" title="experimental::coro_traits::completion_handler"><span class="bold"><strong>completion_handler</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    Completion handler type used by async_resume.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/error_type.html" title="experimental::coro_traits::error_type"><span class="bold"><strong>error_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The error type of the coroutine. void for noexcept.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/input_type.html" title="experimental::coro_traits::input_type"><span class="bold"><strong>input_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The value that can be passed into a symmetrical cororoutine.
                    void if asymmetrical.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/result_type.html" title="experimental::coro_traits::result_type"><span class="bold"><strong>result_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The type received by a co_await or async_resume. It's a combination
                    of yield and return.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/return_type.html" title="experimental::coro_traits::return_type"><span class="bold"><strong>return_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The type that can be passed out through a co_return.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/signature_type.html" title="experimental::coro_traits::signature_type"><span class="bold"><strong>signature_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The signature used by the async_resume.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/yield_type.html" title="experimental::coro_traits::yield_type"><span class="bold"><strong>yield_type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    The type that can be passed out through a co_yield.
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="boost_asio.reference.experimental__coro.traits.h1"></a>
          <span class="phrase"><a name="boost_asio.reference.experimental__coro.traits.data_members"></a></span><a class="link" href="traits.html#boost_asio.reference.experimental__coro.traits.data_members">Data
          Members</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
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<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody><tr>
<td>
                  <p>
                    <a class="link" href="../experimental__coro_traits/is_noexcept.html" title="experimental::coro_traits::is_noexcept"><span class="bold"><strong>is_noexcept</strong></span></a> <span class="silver">[static]</span>
                  </p>
                </td>
<td>
                  <p>
                    Whether or not the coroutine is noexcept.
                  </p>
                </td>
</tr></tbody>
</table></div>
<p>
          Template parameter <code class="computeroutput"><span class="identifier">Yield</span></code>
          specifies type or signature used by co_yield, <code class="computeroutput"><span class="identifier">Return</span></code>
          specifies the type used for co_return, and <code class="computeroutput"><span class="identifier">Executor</span></code>
          specifies the underlying executor type.
        </p>
<h6>
<a name="boost_asio.reference.experimental__coro.traits.h2"></a>
          <span class="phrase"><a name="boost_asio.reference.experimental__coro.traits.requirements"></a></span><a class="link" href="traits.html#boost_asio.reference.experimental__coro.traits.requirements">Requirements</a>
        </h6>
<p>
          <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/experimental/coro.hpp</code>
        </p>
<p>
          <span class="emphasis"><em>Convenience header: </em></span>None
        </p>
</div>
<div class="copyright-footer">Copyright © 2003-2025 Christopher M.
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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